package File;

import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;

public class Domd8 {
    public static void main(String[] args) {
        try(OutputStream outputStream=new FileOutputStream("./output.txt",true)){
            //append 追加写
            outputStream.write(97);
            outputStream.write(98);
            outputStream.write(99);
        } catch (IOException e) {
           throw new RuntimeException(e);
        }
    }
}
